X-ray apparatus



1,629,950 May 1927 c. E. CAMPBELL l-RAY APPAHATUS Filed June 12. 1920 3 Sheets-Sheet l 2 c. E. CAMPBELL X-RAY APPARATUS Filed June 12. 1920 May 7' c. s. CAMPBELL X-RAY APPARATUS Filed June 12. 1920 3 Sheets-Shut Patented May 24-, 1927.

PATENT OFFICE.Y

CHARLES E. CAMPBELL, OF LYNN, MASSACHUSETTS.

X-RAY APPARATUS.

Application filed June 12, 19a. Serial No. 388,436.

The present invention relates to Xray apparatus and moreparticularly to appara tus of this character employed for making X-ray examinations. Y

The object of the invention is to'provide an X-ray apparatus of theabove described character which shall be compact, self-contained and readily portable. The apparatus is more particularly adapted for use in places where it is desired to examine the hands or feet of a person, as for example in the fitting of shoes.

With the above object in view the several features of the invention consist in certain novel features of construction,combinations and arrangements of parts hereinafter de scribed and claimed, the advantages of which will be obvious to those skilled in the art from the following description.

In the accompanying drawings, Figs. 1 and 2 are perspective views of'the apparatus; Fig. 3 is a front elevation of the interior of the apparatus; Fig. dis a side elevation of the interior; Fig. 5 is aplan View of the interior shown in Figs. 3 and 4.

The present invention comprises a port able cabinet mounted upon casters or other means for facilitatingitsmovement and contains theX-ray tube together with the neces-' sary transformers or other apparatus for exciting the tube so that the external connections of the cabinet may be made directly with the usual commercial current circuit. The cabinet is provided'upon its top with a telescoping hood havinga fluorescent screenll'lOlllltGCl therein to receivethe shadows cast by a foot or other member received lIl anopening formed in the bottom of the hood. The operator by directing his gaze downwardly from the top of the hood may observe the shadows upon the fluorescent shield. This apparatus is extremely convenient for the purpose of making X-ray examinations, for example in a shoe store where information is desired regarding the possible deformities of the bones'of a foot.

The illustrated embodiment of the invention comprises a cabinet 2 having a bed frame 4, side walls 6, 8, 10 and 12, and a top composed of two parts 1% and'1'6 disposed at different heights. The frame 4: is provided adjacent the walls 6 and 8 with an opening 18, within which is supported a box 22 by suitably disposed angle irons 20. The box 22 containsa transformer 24, or other X-ray exciting means as an induction coil. Thetransformer box, as indicated in,

Figs. 3"to 5, may be provided with a detaclr able lid 27 to afford access to the interior.

Located between the transformer box and the wall 12 of the cabinet is the X-ray tube.

This tube is supported by suitably arranged supporting posts 32 which carry two setsof cooperating insulating clamps 28 and 30. These insulating clamps are separated from the case by bushings 26 surrounding the lower portions of the posts 32. In the illustrated embodiment of the invent-ion air tube 38 is enclosed within a chamber X-ray 3d formed of lead glass or other material responding opening ll formed in the top 14:

of the cabinet to permit X-ray el'nanations of the tube to pass upwardly therethrough into the hood. It is preferable to cover the opening 41 with sheet of aluminum, as shown clearly in Fig.4, the surface surrounding the opening having a sheet'of lead which is opaque to'X-ray emanations, in addition to the aluminum. This construction provides means for sealing the cabinet, but

at the same time permits the free passage oi the X-rays in a vertical direction.

The X-ray tube is of the usual type, provided with an anode i2 and a cathode comprising a hiament 44.

In order to energize the cathode, a small transformer 46 is mounted upon the wall 8 of the cabinet inimediately beneath the portion 16 of the lop. The current flow through this transformer is controlled by an adjustable resistance 4t8 mounted upon the cabinet near the transformer 46 and connected in circuit with the secondary winding of the transformer. The anode end of the tube is provided with a radiator 50 to dissipate the heat generated within the tube and the heat thus dissipated is permitted to escape from the cabinet through an opening 52 located in the wall 8 adjacent the radiator. The radiator is also more or less insulated from the remaining portions of the cabinet by suitably disposed H ll walls 51 formed of bakelite or similar material. The anode is electrically connected to the secondary winding of the transformer 24 through a conductor '54 connected with the terminal 56 of the secondary, this conductor being enclosed in an insulating tube of hard rubber or other material provided. i'l he cathode end of the X-ray tube 38 is connected by conductors 58 and a disconnecting plug 60 to terminals 62 which may be connected in lilltllll to .a suitable source of energy. The current is conducted [from the :outside source of energy to the cabinet through a socket .70 formed in the wall *8. from the socket '70 the conductors pass :to a switch :66 and thence through a socket 72 to a hoot switch 68 connected. with the small :transformer 4E6. The cabinet is providedupon its upper portion with a hood 'Z lzmeunted upon the top :portion 14 connected thereto shy flanged members This hood, as indicated in 1 ioit thedrawings, is pivots-Hy connected with the flanged ineu'i'bci in such a manner that the hood may be ti pped langularly with relation to =the ca net and source of Xeray. being held in any adjusted position rby clamping SCIG-VS 78. The hood 77d consists-of two telescoping elements 80 and 82, the member 80 containing a fluorescent screen '86 which is radii-pied @to r ceive the shadows casthya footer other object interposed-bet veen the X-raytube and ithescreen. This arrangement permits the height of the eye shield to :be adjusted with relation IO the source. The screen is provided gilbOVB with a protecting shield 84C of 'leadglass which does not obscure the shadows upon the screen, 'but shields the observers. eyes from-the X-ray emanations. A viewiofthe fluorescent screen is had from the upperend of the hood {through a suit: bly shapedeye opening 88 which may be adjusted axially with l-GSQOOtaliO thehood. A clumping screw 90 serves to retain dheeye member in any adjusted position, as indicated in Fig. 1.

upon the aluminum plate immediately over the opening ll. l/Vhen the footis inserted in place, the X-ray ,tube is energized through the medium of the switch 66 located in such a manner that it may be closed by {the root or other member and the shadows :cast upon the fluorescent screen may beobserved by an operator looking downwardly f1?OIl1',tl18 top It will be obvious to those skilled-in the art V V that-the present apparatus -r'or1ns alcon pact i and readily portable outlit which may be employed with great facility and without the necsssit of skilled attention for analrinr a variety of anatomical examinations if desired.

While it is preferredto employ the specific constiuiotion and arrangement of parts shoum and described, it will beiunderstood that ,this co struction and arrangement. is not essentialexcept so far asspesified in the claim,land may be changed or modified without departing [from the broader iteaturesot the invention. i

The invention having beendesctibed, What is claimed is: V i I X-rayapparatus having, incombinatioma cabinet, a sourceot X-rays ,inthe cabinet, a hood pivotally mounted on the cabinet and having an openingefor receptionot' afoot to he examined,afluorescent screenin the hood, an electrical circuit for the 'Xray-source and a-switoh located in the opening in position to be actuated by %the insertion of the toot, the opening inithe hoodxbeing of suriicient'size to ;permit tilting [of the ;hood so :that the structureof the foot may he examined from;

diifi ercnt angles and withou t attecting the pressure placed upon ,the foot-by .the ,body.

tonaniiss \CAR/IPBELL. 

